Printable worksheet for calculating the area of rectangles and parallelograms.

To solve the problem of calculating the areas of rectangles and parallelograms, we need to use the following formulas:

1. Area of a Rectangle:
\[
\text{Area} = \text{Length} \times \text{Width}
\]

2. Area of a Parallelogram:
\[
\text{Area} = \text{Base} \times \text{Height}
\]

Step-by-Step Solution:

#### Worksheet 1: Area of Rectangles and Parallelograms

1. Rectangle (Top Left):
- Length = 8 cm
- Width = 5 cm
- Area = \( 8 \times 5 = 40 \) cm²

2. Parallelogram (Top Right):
- Base = 10 cm
- Height = 6 cm
- Area = \( 10 \times 6 = 60 \) cm²

3. Rectangle (Middle Left):
- Length = 7 cm
- Width = 3 cm
- Area = \( 7 \times 3 = 21 \) cm²

4. Parallelogram (Middle Right):
- Base = 12 cm
- Height = 4 cm
- Area = \( 12 \times 4 = 48 \) cm²

5. Rectangle (Bottom Left):
- Length = 6 cm
- Width = 4 cm
- Area = \( 6 \times 4 = 24 \) cm²

6. Parallelogram (Bottom Right):
- Base = 9 cm
- Height = 5 cm
- Area = \( 9 \times 5 = 45 \) cm²

---

#### Worksheet 2: Area of Rectangles and Parallelograms

1. Rectangle (Top Left):
- Length = 5 cm
- Width = 4 cm
- Area = \( 5 \times 4 = 20 \) cm²

2. Parallelogram (Top Right):
- Base = 8 cm
- Height = 3 cm
- Area = \( 8 \times 3 = 24 \) cm²

3. Rectangle (Middle Left):
- Length = 10 cm
- Width = 2 cm
- Area = \( 10 \times 2 = 20 \) cm²

4. Parallelogram (Middle Right):
- Base = 15 cm
- Height = 2 cm
- Area = \( 15 \times 2 = 30 \) cm²

5. Rectangle (Bottom Left):
- Length = 7 cm
- Width = 6 cm
- Area = \( 7 \times 6 = 42 \) cm²

6. Parallelogram (Bottom Right):
- Base = 12 cm
- Height = 5 cm
- Area = \( 12 \times 5 = 60 \) cm²

---

#### Worksheet 3: Area of Rectangles and Parallelograms

1. Rectangle (Top Left):
- Length = 6 cm
- Width = 3 cm
- Area = \( 6 \times 3 = 18 \) cm²

2. Parallelogram (Top Right):
- Base = 10 cm
- Height = 4 cm
- Area = \( 10 \times 4 = 40 \) cm²

3. Rectangle (Middle Left):
- Length = 9 cm
- Width = 2 cm
- Area = \( 9 \times 2 = 18 \) cm²

4. Parallelogram (Middle Right):
- Base = 14 cm
- Height = 3 cm
- Area = \( 14 \times 3 = 42 \) cm²

5. Rectangle (Bottom Left):
- Length = 8 cm
- Width = 5 cm
- Area = \( 8 \times 5 = 40 \) cm²

6. Parallelogram (Bottom Right):
- Base = 11 cm
- Height = 6 cm
- Area = \( 11 \times 6 = 66 \) cm²

---

Final Answer:

\[
\boxed{
\begin{array}{c}
\text{Worksheet 1: } 40, 60, 21, 48, 24, 45 \\
\text{Worksheet 2: } 20, 24, 20, 30, 42, 60 \\
\text{Worksheet 3: } 18, 40, 18, 42, 40, 66 \\
\end{array}
}
\]